If somebody is bothering you, consider asking or telling them to stop. You might be amazed at how effective the direct approach can be. However, you may be in a situation where someone is bothering you simply because they enjoy the negative reaction it generates. In that case, the best thing you can do is ignore that person, thereby giving them no reaction at all.

Can I block posts, emails and messages from specific users?

If there are particular members that bother you and you do not want to see their posts or receive Private Messages and Emails from them, then you can add these members to your 'Ignore List'. There are several ways to do this: